# A150918 (b-file synthesized from sequence entry)
0 1
1 2
2 9
3 32
4 150
5 629
6 2981
7 13333
8 63815
9 294399
10 1419620
11 6668577
12 32325597
13 153659636
14 747701911
15 3583832819
16 17489677420
17 84342378614
18 412554594772
19 1998755333864
20 9795109320394
21 47628515125998
22 233772469672562
23 1140037690073939
24 5602971263909291
25 27389380521686264
26 134763936157530707